Flavor changing /Z decay /Z-->bs¯(b¯s) in topcolor-assisted technicolor models
Abstract
In the context of topcolor-assisted technicolor (TC2) models, we examine the flavor changing (FC) Z decay Z→b s¯( b¯s) and calculate the contributions of the new particles predicted by TC2 models to the branching ratio Br(Z→b s¯+ b¯s) . We find that the contributions mainly come from the top-pions. In most of the parameter space, the Br(Z→b s¯+ b¯s) can reach 10 -5, which may be detected in near future experiments such as Giga-Z version of the TESLA. Thus, the FC Z decay Z→b s¯( b¯s) can be used to test TC2 models.
- Publication:
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Nuclear Physics B
- Pub Date:
- February 2003
- DOI:
- 10.1016/S0550-3213(02)01015-5
- arXiv:
- arXiv:hep-ph/0211116
- Bibcode:
- 2003NuPhB.650..290Y
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- Final version to appear in Nucl. Phys. B. References added